<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        span {
            border: 1px solid black;
            background-color: lime;
        }
    </style>
</head>

<body>
    <p>
        Let's use:
        <span>Cascading</span>
        <span>Style</span>
        <span>Sheets</span>
    </p>
</body>

</html>